regex101: Python Match Workspace

CRITICAL - Unexpected Error: blah blah errorthe literal text CRITICAL - Unexpected Error: blah blah error (case sensitive)

Non-Capturing Group(?:(?!pythonerror.Error: blah blah error).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!pythonerror.Error: blah blah error)

pythonerrorthe literal text pythonerror (case sensitive)

.any Unicode character

Error: blah blah errorthe literal text Error: blah blah error (case sensitive)

.any Unicode character

Non-Capturing Group(?:\b([^\s]+)\npythonerror\.Error: blah blah error)

\ba Unicode word boundary

Group 1([^\s]+)

Negated Character Class[^\s]+

+matches at least one character outside the set below:

\sa Unicode whitespace character

\na line-feed (newline) character (ASCII 10)

pythonerrorthe literal text pythonerror (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Error: blah blah errorthe literal text Error: blah blah error (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

s modifier: single line. Allows a dot to match line terminators

Search reference

Regular Expression

CRITICAL - Unexpected Error: blah blah error(?:(?!pythonerror.Error: blah blah error).)*(?:\b([^\s]+)\npythonerror\.Error: blah blah error)

New

CRITICAL - Unexpected Error: blah blah error
Traceback (most recent call last):
  File "example1.py", line 100, in method1
  File "example2.py", line 200, in method2
  File "example3.py", line 300, in method3
pythonerror.Error: blah blah error

CRITICAL - Unexpected Error: blah blah error
Traceback (most recent call last):
  File "example1.py", line 100, in method1
  File "example3.py", line 300, in method3
  File "example2.py", line 200, in method2
pythonerror.Error: blah blah error

CRITICAL - Unexpected Error: other error
Traceback (most recent call last):
  File "example1.py", line 100, in method1
  File "example2.py", line 200, in method2
  File "example3.py", line 300, in method3
pythonerror.Error: other error

CRITICAL - Unexpected Error: blah blah error
Traceback (most recent call last):
  File "example1.py", line 100, in method1
  File "example2.py", line 200, in method2
  File "example3.py", line 300, in method3
pythonerror.Error: blah blah error

Regular Expressions 101

Regular Expression

Substitution